Out-of-bounds Write Affecting microsoft.windowsdesktop.app.runtime.win-arm64 package, versions [8.0.0,8.0.32)[9.0.0,9.0.21)[10.0.0,10.0.13)[11.0.0-preview.1,11.0.0-rc.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DOTNET-MICROSOFTWINDOWSDESKTOPAPPRUNTIMEWINARM64-21717145
- published26 Oct 2026
- disclosed13 Oct 2026
- creditUnknown
Introduced: 13 Oct 2026
NewCVE-2026-70007 (opens in a new tab)How to fix?
Upgrade Microsoft.WindowsDesktop.App.Runtime.win-arm64 to version 8.0.32, 9.0.21, 10.0.13, 11.0.0-rc.2 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write via the CPSTrans::Initialize process. An attacker can achieve arbitrary code execution or cause application crashes by supplying crafted WPF pixel-shader bytecode that desynchronizes parsing passes, leading to heap out-of-bounds writes or reads.